RT Journal T1 Effects of Aging on the Proliferation and Differentiation Capacity of Human Periodontal Ligament Stem Cells A1 Du Tingting, Liu Na, Gu Bin, Li Ying, Yuan Yifang, Zhang Wei, Zhang Tong PB Chinese Medical Sciences Journal FD 2017-06-30 YR 2017 JF Chinese Medical Sciences Journal JO Chinese Medical Sciences Journal VO 32 IS 2 SP 83 DO 10.24920/J1001-9294.2017.012 K1 periodontal ligament stem cells;aging;proliferation;osteogenic differentiation LK {http://cmsj.cams.cn/EN/article/article_359.shtml}